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