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