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