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