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