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