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