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)(19,24)(20,26)(21,27)(22,32)(23,25)(28,31)(29,30)(33,34,39,42)(35,43,45,40)(36,46,47,37)(38,41,44,48)(1,3)(2,7)(4,11)(5,12)(6,10)(8,15)(9,14)(13,16)(17,19,23,22)(18,24,25,32)(20,28,30,27)(21,26,31,29)(33,35,39,45)(34,40,42,43)(36,41,47,48)(37,44,46,38)(3,10)(4,8)(5,13)(7,14)(18,25)(19,22)(20,30)(21,31)(36,47)(37,46)(38,44)(41,48) involution — undirected(1,4)(2,5)(3,11)(6,8)(7,12)(9,13)(10,15)(14,16)(17,20)(18,26)(19,28)(21,32)(22,27)(23,30)(24,31)(25,29)(33,36,39,47)(34,37,42,46)(35,41,45,48)(38,40,44,43)(1,5)(2,8)(3,12)(4,9)(6,13)(7,15)(10,16)(11,14)(17,21,23,31)(18,27,25,28)(19,29,22,26)(20,24,30,32)(33,37)(34,36)(35,44)(38,45)(39,46)(40,41)(42,47)(43,48)(1,3)(2,7)(4,11)(5,12)(6,10)(8,15)(9,14)(13,16)(17,22,23,19)(18,24,25,32)(20,27,30,28)(21,26,31,29)(33,38,39,44)(34,41,42,48)(35,37,45,46)(36,40,47,43)A 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.