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