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