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