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