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