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