One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,7)(3,5,9,13)(4,8,11,14)(10,12,15,16)(17,18)(19,21)(20,24)(22,25)(23,26)(27,29)(28,30)(31,32)(33,34,39,41)(35,45,46,40)(36,37,43,42)(38,48,47,44)(4,11)(8,14)(10,15)(12,16)(17,19,23,20)(18,24,26,21)(22,27,31,28)(25,30,32,29)(33,35)(34,40)(36,47)(37,48)(38,43)(39,46)(41,45)(42,44)(2,7)(3,9)(8,14)(10,15)(34,41)(35,46)(36,43)(44,48) involution — undirected(1,3)(2,5)(4,10)(6,9)(7,13)(8,12)(11,15)(14,16)(17,20,23,19)(18,24,26,21)(22,28,31,27)(25,30,32,29)(33,36,39,43)(34,42,41,37)(35,47,46,38)(40,44,45,48)(1,4)(2,8)(3,10)(5,12)(6,11)(7,14)(9,15)(13,16)(17,21,23,24)(18,19,26,20)(22,30,31,29)(25,28,32,27)(33,37,39,42)(34,43,41,36)(35,44,46,48)(38,40,47,45)(1,5)(2,3)(4,12)(6,13)(7,9)(8,10)(11,16)(14,15)(17,22,23,31)(18,25,26,32)(19,27,20,28)(21,29,24,30)(33,38,39,47)(34,44,41,48)(35,43,46,36)(37,40,42,45)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.