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