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