One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,9)(3,7,10,14)(4,5,8,13)(11,12,15,16)(17,18,23,28)(19,25,20,24)(21,26,31,29)(22,30,32,27)(33,34)(35,40)(36,45)(37,41)(38,46)(39,43)(42,47)(44,48)(1,3)(2,7)(4,11)(5,12)(6,10)(8,15)(9,14)(13,16)(17,19,23,20)(18,24,28,25)(21,30,31,27)(22,29,32,26)(33,35,39,44)(34,40,43,48)(36,46,41,42)(37,47,45,38)(3,10)(7,14)(11,15)(12,16)(17,19,23,20)(18,24,28,25)(21,27,31,30)(22,26,32,29)(33,36,39,41)(34,37,43,45)(35,42,44,46)(38,48,47,40)(1,4)(2,5)(3,11)(6,8)(7,12)(9,13)(10,15)(14,16)(17,20,23,19)(18,25,28,24)(21,27,31,30)(22,26,32,29)(33,34)(35,40)(36,37)(38,42)(39,43)(41,45)(44,48)(46,47)(1,5)(2,8)(3,12)(4,9)(6,13)(7,15)(10,16)(11,14)(17,21,23,31)(18,26,28,29)(19,27,20,30)(22,24,32,25)(33,37)(34,41)(35,38)(36,43)(39,45)(40,46)(42,48)(44,47)(1,3)(2,7)(4,11)(5,12)(6,10)(8,15)(9,14)(13,16)(17,22)(18,27)(19,29)(20,26)(21,24)(23,32)(25,31)(28,30)(33,38)(34,42)(35,37)(36,40)(39,47)(41,48)(43,46)(44,45) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.