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)(9,11)(10,15)(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)(7,11)(10,15)(12,13)(14,16)(17,18,23,26)(19,27,21,24)(20,22,25,32)(28,31,30,29)(34,39)(36,41)(40,42)(43,47)(2,6)(4,13)(7,9)(10,16)(17,19,23,21)(18,24,26,27)(20,30,25,28)(22,31,32,29)(33,34,38,39)(35,40,45,42)(36,37,41,46)(43,44,47,48)(1,2)(3,9)(4,8)(5,6)(7,11)(10,15)(12,13)(14,16)(17,20,23,25)(18,22,26,32)(19,28,21,30)(24,29,27,31)(33,35,38,45)(34,40,39,42)(36,43,41,47)(37,44,46,48)(1,3,5,11)(2,7,6,9)(4,10,13,16)(8,14,12,15)(17,21,23,19)(18,24,26,27)(20,28,25,30)(22,31,32,29)(33,36,38,41)(34,37,39,46)(35,43,45,47)(40,44,42,48)(1,4,5,13)(2,8,6,12)(3,10,11,16)(7,14,9,15)(17,22)(18,25)(19,29)(20,26)(21,31)(23,32)(24,30)(27,28)(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.