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)(34,38)(35,41)(36,44)(45,48) 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)(33,34,39,38)(35,42,41,37)(36,40,44,46)(43,48,47,45)(2,6)(3,10)(4,13)(14,15)(17,19,23,30)(18,24,27,28)(20,21,26,29)(22,31,32,25)(33,35)(34,37)(36,43)(38,42)(39,41)(40,45)(44,47)(46,48)(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)(33,36)(34,40)(35,43)(37,45)(38,46)(39,44)(41,47)(42,48)(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)(33,37,39,42)(34,41,38,35)(36,45,44,48)(40,47,46,43)(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)(33,38,39,34)(35,42,41,37)(36,46,44,40)(43,48,47,45)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.